Rollino mill



Sept. 29, 1925. Re. 16,177

L. IVERSEN ROLLING MILL Original Filedwov. 22, 1920 ffy FIEJ..

Reissued Sept. 29, 1925.

UNITED STATES LOLENZ IVERSEN, 0F PITTSBURGH, PENNSYLVANIA,

WEST HOMESTEAD, PENNSYLVANIA,

COMPANY, or VANIA.

ASSIGNOB T0' MEBTA MACHINE A CORPQMTION 0F PENNSYL- ROLLING MILL.

Original No. 1,496,468, dated .Tune 3, 1924, Serial No. 425,636, led November 22, 1920. Application for reissue led January 30, 1925. Serial No. 5,907.

To all whom it may concern.'

Be it known that I, LORENZ IvnRsEN, a citizen of the United States, and a resident of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have made a new and useful invention in Rolling Mills, of which the following is a specification.

My invention relates to rolling mills and more particularly to an improved connection between the mill spindles and their rolls and driving pinions of such construction as to render the assembling and disassem'bling thereof easy and rapid.

The main object of my invention is to decrease the time required to change the rolls. As such time is entirely non-productive, it is important that the operation be as short and simple as possible.

Another object is to provide a rolling mill having means for assembling and disassembling the driving spindles from the associated rolls without the necessity of first unfastening a connection or removing any part or parts thereof.

In my previous Patent No. 1,359,601, granted November 23, 1920, I illustrate and claim a universal coupling including a novel coupling unit utilized in the mechanism illustrated in the accompanying drawings, in which Figure 1 is an elevation'of a mill equipped with my invention, Fig. 2-is a horizontal section through the joint between one of the spindles and its respective pinion and is drawn on an enlarged scale and Fig. 3 is an isometric View of a detail of the unversal coupling set forth and claimed in my aforementioned patent.

The mill driving pinions are enclosed in a housing 1 from which the pinion necks 2 and 3 extend and, by means of spindles 4 and 5, are connected to their respective rolls 6 and 7.

The requisite universal joint between each spindle and the pinion or roll includes a tongue on the pinion or roll, a recess in the spindle adapted to receive the tongue and a coupling unit for pivotally securing the tongue in the groove to prevent relatrve transverse movement and the resulting disassembly of the spindle and pinion or roll. This unit, as more fully described in the above-mentioned patent, includes a pin element 8 which extends across the spindle recess and is received in a slot 9 in the tongue member.

As shown in Fig. 3, the pin 8 is rigidly secured to two opposed segmental members B and C. The unit is mounted in a se mental cylindrical recess D, as shown 1n Fig. 1, so that it is capable of turning to accommodate itself to the misalignment of the spindle and the pinion or roll.

In the joint between the pinion and spindle, the recesses 10 extend inwardly some distance beyond the coupling unit. Similarly, the shoulders of the tongues 11 on pinions 2 and 3 are cut back some distance from the ends of their respective spindles. This construction enables each spindle to be moved towards its pinion far enough to entirely separate the opposite end of the spindle from its respective roll permitting the latter to be removed and replaced by another roll which, in turn, may be connected to the spiildle by merely shifting the latter to the rig t.

It will be understood that the enlarged recess and elongated ton e may be located at either end of the spin le or at both ends, also that the tongue may be located on the spindle and the recess on the adjacent element, but the construction and relative positions shown are preferred.

`The above-described arrangement of the couplings avoids the lifting or transportation of the spindles whenever the rolls are changed and results in a material saving of time.

To shift the spindles to and fro as described and to relieve the roll and pinion bearings of the weight of the spindles are the functions of the movable bearings 12 and 13 and their associated mechanism.

The lower s indle 5 is supported at 13 by a bearing, t e stand 14 of which is slidably mounted on a base plate 15. Hydraulic c lmders are indicated at 16 and 17 and t eir common piston stem 18 is linked to the bearing stand 14 so that by admission of fluid to the proper cylinder, the stand, bearing and spindle are shifted as desired. A key 19 locks the bearing stand in the position indicated to avoid undesired shifting of the spindle during operation of the mill.

The upper spindle bearing 12 is mounted on a lever 2O pivotally supported by a pitman 21, mounted on the piston rod of a hydraulic cylinder 22, and by a link 23 fulcrumed on housing 1 and adapted to be operated by h draulic cylinders 24 and 25. Admission o fluid to one of the latter cylinders will shift the u per spindle 4 without depriving it of its caring support as the fluid pressure in cylinder 22 is maintained so as to accommodate the resulting displacement of the piston. The pressure in the cylinder 22 also accommodates variations in the position of spindle 4 in the vertical plane of its axis, for instance when moved to the position indicated by the dot-anddash line A.

Key 26 locks spindle 4 against longitudinal shifting without affecting the operation of the vertical adjustment.

It is obvious that, by use of the shifting mechanism described, the handling of the spindles is rendered a matter of seconds and may be controlled by one man.

While I have illustrated hydraulic operating and supporting mechanism, I contemplate the substitution of eiective equivalents for the cylinders and pistons shown.

Having described my invention and illustrated its preferred construction, I claim:

1. In a rolling mill, a driving member, a rollv member, a spindle connecting said members, a coupling between each end of said spindle and the adjacent member, forming a universal joint therebetween and adapted to permit axial movement of said spindle toward one of said members to disengage said spindle from said other member and means for so moving said spindle.

2. In a rolling mill, a driving member, a roll, a spindle member connecting said roll and said driving member, a coupling unit mounted in one of said members, a

e on the other of said members engaging said unit so as to form a universal joint and a recess in the member containin said unit adapted to permit relative axial movement between said members to separate said spindle from said roll.

3. In a rolling mill, a driving member, a roll member, an axially movable spindle connecting said members, a bearing for supportin said spindle in operative relation to sai members and means for moving said spindle so as to disconnect it from one of said members.

4. In a rolling mill, a driving member, a roll member, a movable spindle connecting 'said members, means for shifting said spindle so as to disconnect it from one of said members, and means for supporting said spindle in its operative position and in its shifted or disconnected osition.

5. In a rolling mill, a driving member, aro member, a spindle connectin said members, a su port for normally maintaining said spind e in operative relation to said members and means for moving said support so as to shift said spindle and disconnect it from one of said members.

6. Ina rolling mill, a driving member, a roll member, a movable spindle normally operatively connecting said members, means for supporting said member, and means for moving said support means to disconnect said spindle from one of said members while supporting said spindle.

7. The combination in a rolling mill having a plurality of roll members, of a driving member for each of said roll members, a spindle adapted to connect each driving member with the associated roll member, a bearing for each spindle adapted to normally sup ort said spindle in operative relation to t e associated members and means for moving each bearing so as to shift the spindle supported thereby and disconnect it from one of said members.

8. The combination lin a rolling mill having a plurality o roll members, of a driving member for each of said roll members, a spindle adapted to connect each driving member with the associated roll member, a bearing for each spindle adapted to normally sup rt said spindle in operative relation to t e associated members, means for moving each bearing so as to shift the spindle supported thereby and disconnect it from one of said members and means for supporting one of said bearings at different elevations.

9. In a rolling mill, a driving member, a roll member, a spindle connecting said members and having a universal coupling to each of said members adapted to permit axial movement of said spindle, a spindle carrier bearing Vand means for moving said bearing so as to shift said spindle axially to separate it from one of said members.

10. In a rolling mill, a vertically movable roll driving spindle adapted to be shifted axially so as to disconnect it from the associated roll, a bearing or said spindle mounted upon a supporting lever, a floating support for one end of said lever, a horizontally movable support for the other end of said' lever and means for movin said lever so as to shift said spindle axia y.

11. In a rolling mill, a roll driving spindle, a bearing for supporting said spindle, a fluid pressure operated plunger connected to said bearing and means for operating said plunger so as to move said bearing and shift said s indle axially.

12. n a rolling mill, a spindle, a slidably mounted spindle bearing, two horizontally mounted opposed hydraulic cylinders, a double ended plunger operated by said cylinders, and means for movin said spindle bearing by said plunger for le purpose of shift' said s indle.

13. n a ro 'ng mill, a spindle adapted to be shifted axially to disconnect it from its roll and to be mov'ed vertically, a bearing the associated roll and to move in a vertical for said spindle mounted upon a horizontal plane to accommodate vertical movement of lever, a fluid pressure support for one end said roll a bearing for said s indle, means of said lever, and a horizontally movable 5 for shifting said bearing axially of said roll ivotal support for the other end of said l5 and means for automatically adjusting the ever, and means for posi-tively actuating vertical position of said bearing to accom- Suid pVOtal Support. l modate vertical movements of said spindle. In tStimOIly whereof, I llave hereunto 14. In a rolling mill, a spindle ada :ed Set my hand this 26th day 0f Jnuam1925- l0 to be shifted axially to disconnect it rom LORENZ 'IVERSEN Certificate of Correction.

It is hereby certified that in Reissue Letters Patent No. 16,171. granted Septernber 29, 1925, upon the application of Lorenz Iverson, of Pittsburgh, Pennsylvama, for an improvement in Rolling Mills, an error appears in the printed specification requiring correction as follows: Page 2, line 72, claim 6, for the word mel'nber readspindle; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 27th day of October, A. D. 1925.

[BELL] KARL FENNING,

Actzng Commissioner of Patens. 

